---
id: CVE-2026-100503
title: >-
  Ghidra versions through 12.1.4 contain a heap use-after-free vulnerability in
  the decompiler's Funcdata::opInsertAfter function caused by stale INDIRECT
  effect-op references
summary: >-
  Ghidra versions through 12.1.4 contain a heap use-after-free vulnerability in
  the decompiler's Funcdata::opInsertAfter function caused by stale INDIRECT
  effect-op references. Attackers can craft a malicious binary with a specific
  x86-64 …
severity: low
cvss: 3.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'
cwe:
  - CWE-416
vendor: nsa
product: ghidra
affected:
  - ghidra <= 12.1.4
published: '2026-09-26'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T16:43:21.090'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100503'
references:
  - url: 'https://github.com/NationalSecurityAgency/ghidra'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178c2e9fbc/Ghidra/Features/Decompiler/src/decompile/cpp/merge.cc#L462-L472
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178c2e9fbc/Ghidra/Features/Decompiler/src/decompile/cpp/subflow.cc#L2717-L2745
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/NationalSecurityAgency/ghidra/commit/5ef1ee4d7a25a65db195f3a70f681ca74440be61
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/ghidra-through-12.1.4-heap-use-after-free-in-decompiler
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00118
epssPercentile: 0.01703
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-29T17:23:50.475506Z'
ingestedAt: '2026-09-26T01:24:36.885Z'
---

## Overview

Ghidra versions through 12.1.4 contain a heap use-after-free vulnerability in the decompiler's Funcdata::opInsertAfter function caused by stale INDIRECT effect-op references. Attackers can craft a malicious binary with a specific x86-64 sequence that triggers the vulnerability during decompilation, causing the decompile helper process to crash and denying service to analysts and automated analysis pipelines.

## Affected

- `ghidra <= 12.1.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.